Hydrohistorian
Durango West Md No. 1
Modelled boundary. EPA estimated this service area (Random Forest) rather than tracing a utility-supplied map; treat the edge as approximate. About 2 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| WELL NO 9 | Well | Groundwater |
| WELL NO 7 SHARED WITH DW MD NO 2 | Well | Groundwater |
| WELL NO 3 | Well | Groundwater |
| PURCHASED LAKE DURANGO | Consecutive connection (purchased) | Surface water · from LAKE DURANGO WA |
These are EPA's facility records, not DWR structures. Which decreed rights sit behind an intake is the next phase; nothing here is inferred.
Wholesale connections
Buys water from LAKE DURANGO WA.
DWR structures that name this system
Source Probable join · fetched 2026-11-06 · matched on DWR's recorded contact or an EPA intake name; verify on the dossier
No DWR structure on file records this system as its contact, and none of its EPA intakes matches a structure name in its districts. DWR records a contact on only a fraction of structures, and only for districts fetched from its live service, so this is absence of a record, not evidence of no rights.
Compliance record
Source Register of another agency · fetched 2026-11-07 · verify at EPA ECHO ↗
Nothing open today, but 2 health-based violations appear on the federal record historically. The history is below.
EPA's own summary: violations in 0 of the last 12 quarters.
What happened
All 2 violation records on file, grouped into the 1 distinct thing EPA's codes describe. Dates are the compliance period the violation is filed against.
Rule: Stage 2 Disinfectants and Disinfection Byproducts Rule.
Every violation record, as filed (2 of 2)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2020-01-01 – 2020-03-31 | MCL, Average | Total Haloacetic Acids (HAA5) | health-based | returned to compliance (2020-05-18) | 0.0664 MG/L (limit 0.06) |
| 2019-10-01 – 2019-12-31 | MCL, Average | Total Haloacetic Acids (HAA5) | health-based | returned to compliance (2020-05-18) | 0.06403 MG/L (limit 0.06) |
What the regulator did about it
24 enforcement actions on this system's federal record. In Colorado the state is the primacy agency, so most actions are the state's; EPA acts directly on tribal systems and when it steps in.
| Date | Action | By |
|---|---|---|
| 2020-05-18 | St Compliance achieved Reliably and consistently below MCL for LRAA calculation for 2 quarters. STY 9/30/2020 |
state |
| 2020-04-21 | St Public Notif received | state |
| 2020-03-05 | St Violation/Reminder Notice | state |
| 2020-03-05 | St Public Notif requested | state |
| 2019-12-27 | St Violation/Reminder Notice | state |
| 2019-12-27 | St Public Notif requested | state |
| 2017-07-19 | St Compliance achieved Soxing with received date of CCR & COD for calendar year 2016 kld 7/19/17; |
state |
| 2016-09-27 | St Compliance achieved System took required L&C samples in September 2016. hpo 10/28/2016 |
state |
| 2016-09-16 | St Compliance achieved | state |
| 2016-07-22 | St Violation/Reminder Notice | state |
| 2016-07-22 | St Violation/Reminder Notice | state |
| 2016-07-22 | St Public Notif requested | state |
| 2016-06-29 | St Compliance achieved System took required routine SOCs, including PCB, in 2016. hpo 11/4/2016 |
state |
| 2016-06-03 | St Violation/Reminder Notice | state |
| 2016-06-03 | St Public Notif requested | state |
| 2016-06-03 | St Violation/Reminder Notice | state |
| 2016-06-03 | St Public Notif requested | state |
| 2016-06-03 | St Violation/Reminder Notice | state |
| 2016-06-03 | St Public Notif requested | state |
| 2016-02-17 | St Compliance achieved | state |
20 most recent of 24; the rest are on the ECHO report.
Lead and copper
The latest 90th-percentile lead result is 0.001 mg/L (sampling period ending 2025-12-31) against an action level of 0.015 mg/L, below it. 7 results on file.
The action level is not a health limit: it is the level at which the rule requires a system to act (corrosion control, public education, and in some cases replacing lead service lines). Lead mostly enters water from household plumbing, so a system-wide percentile does not tell you what comes out of one tap.
Violation, enforcement and lead/copper records are EPA SDWIS federal reporting, fetched monthly; the summary is EPA ECHO. Code names come from EPA's own REF_CODE_VALUE table. SDWIS carries violations, not routine sample results — nitrate, disinfection by-product and PFAS values are not in it, and a clean record here means nothing was reported as a violation, not that nothing was ever detected. For what was measured, ask the system for its Consumer Confidence Report.
PFAS and lithium: EPA's UCMR 5 monitoring, 2023–2025
Source Register of another agency · fetched 2026-10-09 · verify at EPA UCMR occurrence data ↗
EPA did not sample this system under UCMR 5 (the rule covered every system serving more than 3,300 people and a drawn sample of smaller ones).
Common questions
Who provides drinking water in Durango, Colorado?
Durango West Md No. 1 is the public water system serving 750 people in La Plata County, from purchased surface water. Its EPA public water system id is CO0134180.
Where does Durango West Md No. 1 get its water?
Durango West Md No. 1 reports purchased surface water as its primary source. EPA lists its source facilities as WELL NO 9, WELL NO 7 SHARED WITH DW MD NO 2, WELL NO 3, PURCHASED LAKE DURANGO.
Does Durango West Md No. 1 have any drinking water violations?
EPA's compliance record shows no open health-based violations for Durango West Md No. 1 at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Every provider in La Plata County.
The record
EPA SDWIS federal reporting as of 2026-11-06; the compliance record above is EPA's own, fetched monthly, and the ECHO report carries the rest. Report a problem →